Item Type: LED Flashlight Model: K12 Blue Irradiation Distance: Approx. 300-500 meters / 984.25-1640.42ft Size: Length: Approx. 142mm / 5.59in, Head Diameter: Approx. 66mm / 2.60in, Tail Diameter: Approx. 53mm / 2.09in Dimming Mode: Strong Light, Weak Light, Long Press to Flash Luminous Color: White Light Brightness: 8000LM Material: Aluminum Alloy Switch Type: Lamp Head Push Switch Waterproof Grade: IPX5 (Rainproof, Splashes Water Prevention) Battery: Use 4Pcs 18650 lithium batteries (not included) (the battery compartment designed with 4 batteries in parallel can hold 1 battery, or 2, 3, or 4 can be placed, generally 4, the difference is only the battery life The time is different, the brightness is the same.) Weight: Approx. 365g / 12.87oz